简介：Inthisworktypicalmechanicalpropertiesforacatalystsupportmaterial,ZSM5(aspray-driedgranularzeolite),havebeenmeasuredinordertorelatethebulkbehaviourofthepowdermaterialtothesingleparticlemechanicalproperties.Particleshapeandsizedistributionofthepowders,determinedbylaserdiffractionandscanningelectronmicroscopy(SEM),confirmedthesphericalshapeofthespray-driedparticles.TheexcellentflowabilityofthematerialwasassessedbytypicalmethodssuchastheHausnerratioandtheCarrindex.Thiswasconfirmedbybulkmeasurementsoftheparticle-particleinternalfrictionparameterandflowfunctionusingaSchulzeshearcell,whichalsoillustratedthelowcompressibilityofthematerial.SingleparticlecompressionwasusedtocharacterizesingleparticlemechanicalpropertiessuchasreducedelasticmodulusandstrengthfromHertzcontactmechanicstheory.Comparisonwithsurfacepropertiesobtainedfromnanoindentationsuggestsheterogeneity,thesurfacebeingharderthanthecore.Inordertoevaluatetherelationshipbetweensingleparticlemechanicalpropertiesandbulkcompressionbehaviour,uniaxialconfinedcompressionwascarriedout.ItwasdeterminedthattheAdamsmodelwassuitablefordescribingthebulkcompressionandfurthermorethattheAdamsmodelparameter,apparentstrengthofsingleparticles,wasingoodagreementwiththesingleparticlestrengthdeterminedfromsingleparticlecompressiontest.